Olds 394 Engine Identification, It's also a place to sell your parts and post wanted for 303-394 engines. It seemed to me there was a difference in bolt on stuff between the 2 engines but I can't remember. Yes, I know I can find the engine numbers but being a bit lazy here. All used shaft mounted rockers. General Information Note: The information contained in all of the "Engine Detail" sections should be read before proceeding with modifications, etc. 1960-75 Oldsmobile engine code decoder reveals the stamp location, engine displacement, horse power, compression ratio, and Carburetor configuration. Detailed Listing Intake, Exhaust Port Sizes 1954 and 1955 324s' have smaller intake ports and valves than the 1956 engines. I'm looking at a 59/60 olds 394 right now that's had a rebuild. Feb 26, 2016 · Here is a quote from the seller: Have an all original rare 394 Oldsmobile motor with hydro trans from a high compression G code 1962 Olds with 10 to 1 compression and 330 HP. Jul 31, 2014 · OK, don't laugh but the 50's are not my era of expertise. The engine-block designs remained virtually unchanged right up to the last Olds engine […] Dec 27, 2008 · Olds / Oldsmobile 394 "ultra"engine ID Discussion in ' The Hokey Ass Message Board ' started by BROCK ART STUDIO, Dec 27, 2008. Jan 15, 2006 · How does one identify the year of a 394? January 15, 2006 in Oldsmobile - Technical. The casting number is located at the rear of the bell housing. The cylinder head is P9169654. The head casting number is 573305. We would like to show you a description here but the site won’t allow us. Easy to spot by the 3 carb holes. This code has a letter designating the plant (Flint = F), a production date code (month/day), and a suffix code which identifies the engine. Any engine from 1949 thru 1958 will bolt into a 1949 to 1953 body without much trouble. 5" high followed by the casting number. I "use" to hear good things about the "Father. Identification The ID/Code is located on the top of the left center exhaust port on each head. Olds did go to 12 volt electrics in 1953, so that would likely be the biggest problem area in swapping these engines. One is We would like to show you a description here but the site won’t allow us. Detailed Listing Intake manifolds are cast iron unless otherwise noted. Thank you. I've been planning on rebuilding a 63/4 olds 394 that I have, and have been buying vintage speed and dress up stuff for the late 394 (bought stuff from members here). Apr 14, 2019 · Facing the front of the engine, at the top surface of the timing chain area, to the left of the oil fill tube, there is a code about 1. The engine was again enlarged in 1957 to 371 cubic inches and again to its final size of 394 cubic inches in 1959. The later V-8 intake seals directly to the block. Nov 2, 2011 · I'm planning to buy a 61 olds super 88 holiday special and need to know how to identify a 394. Aug 8, 2008 · I'm trying to ID a 394 engine that has the front cover & water pump consistent with 1963-4. " Remember I said "use" to, 20 years ago. A note about Oldsmobile casting dates: Oldsmobiles use Julian date codes. The 4 1/8 indicates a 4 1/8" (4. Apr 20, 2015 · Taking the lazy way out, what is the easiest way of identifying whether you have a 303-371 or 394 engine? Just not my era of expertise! Jul 6, 2006 · That would be a 394 Olds block, built between 1959 and 1964. Nov 4, 2015 · In 1964 Oldsmobile introduced its newly designed 330 C. All Oldsmobile V8s were assembled at plants in Lansing, Michigan, while the engine block and cylinder heads were cast at Saginaw Metal Casting Operations. Jan 1, 2009 · Check out these V8 Oldsmobile engines that are still used throught the world of Hot Rodding and used to be used in the world of NASCAR inside Street Rodder Magazine. The number on the head boss is 090774. Mechanical linkage. He even has aluminium heads for them, large lifters, etc. I am rebuilding and need to identify the year for ordering parts. Identification The early Olds V-8s used a "raised" intake manifold design with a separate valley cover. As for the original question, on the top of the bellhousing, a 394 will have "4-1/8" cast on to indicate the bore size of a 394. ID/ Casting Code Year(s) CID CCs Number Notes 10 1949 10 1956 16 1957 371 18 195? 20 394 23 1964 394 Seen on 394. Like all other GM divisions, Olds continued building its own V8 engine family for decades, adopting the corporate Chevrolet 350 small-block and Cadillac Northstar engine only in the 1990s. Block #R174324. Mar 30, 2020 · There's a shop in Niles, Ohio that the Father was a Guru with the 394/371/324/303 early Oldsmobile engines. I. . The number are about ¾" high, and oriented to the right (passenger) side. Identification On 1959-1963 engines, the 371 has gold valve covers, and the 394 has green valve covers. thanks, Ida Red Jan 10, 2019 · mgtstumpy Member from Brisbane Australia The engine number will identify it as well as casting numbers Flywheels: Oldsmobile 1949 - 1953 (303) - 145 teeth Oldsmobile 1954 - 1960 (324 + 371) - 176 teeth Oldsmobile 1961 - 1964 (late 371 + 394) - 176 teeth 303 and 324s are internally balanced, external balancing started with the 371 in 1957. This could easily be changed though. Jul 10, 2012 · 7&7 wrote: If you look on Mondello's web site you will see a lot of interesting info on Oldsmobile oiling. Any help would be greatly appreciated. ID/ Casting Code Number Year(s) Application/Notes 571145 '57,'58 371, Tri-carb, 3 2bbl. The 330 was much lighter than the 394 and more powerful than the 215 F-85 V-6 power plant it replaced. Any quick way to tell. All you will see is a number cast into the part from 1 to 365. Note: The information contained in all of the "Engine Detail" sections should be read before proceeding with modifications, etc. I just got a race car yesterday that was advertised as a 394 but I think it is a 303 or a 324. OLDSMOBILE BLOCK CASTING NUMBERS Blocks 1949 - 1964 The casting number is located at the rear of the bell housing. Submit corrections and additions to this information to The Olds FAQ Compiler. 125") bore, which makes it a 394. This is a group dedicated to the rebuilding, hot rodding, restoring and fond memories or pictures of the 303-394 Oldsmobile engine family. Head #561557. I don't have the appropriate literature covering those years. 573388 '5? D2 580676 '61 394 Oldsmobile FAQ 394 CID Engine Detail. He built the engines complete and dyno'd them. The engine casting number is 574534 - 4 1/8. The blocks are too different from each other to have the same casting number for all years '59-64. 1964-67 V8 models engine code is stamped on the right cylinder head. Unlike Chevy, which uses actual dates (like 3 C 69, for March 3, 1969), Olds will cast 62 for the 62nd say of the year. A note about common engine displacement among divisions: While it may be hard to believe in today's era of corporate engines, each GM division, at least through the mid-70s, unlike Ford and Chrysler, had their own unique engine designs. It will look like a plate with the date was screwed into the mold for the manifolds. Timing Chain Covers Major differences are the timing chain covers. 1957 and later cylinder heads May 16, 2006 · NONE of those casting numbers should be '59-64! They should be '59-60 371, '59-60 394, '61 394, '62 394, and '63-4 394. , because some information that applies to all engines, or all small blocks or all big blocks, might not be duplicated in every section. for the following Oldsmobile casting numbers. Is there key items to look for? Aug 22, 2004 · Can anyone tell me year, CID, etc. engine. It could've come from any full-sized Olds of that time period, a good, torquey, reliable motor most often backed by the Roto-Hydramatic (Slim Jim) transmission. Granted it mostly pertains to the mid 60's engines never the less if you look at your 303-324-371-394 you will see similarities in how GM machined these blocks. Nov 16, 2021 · Oldsmobile engine blocks, as far as most Olds enthusiasts are concerned, started in 1965. The first V-8s in this new-style Oldsmobile engine line started as the 330-ci models for the small-block family and the 400- and 425-ci models for the big-block family. If you want to build these first generation Olds Rocket engines, consider getting in touch with some of the oldtimer nostalgia racers who have raced these Olds V-8's. 1x2nt, x7nk0, sngi, ce2q, ndawu, yawi, yahulo, f84j, vrrn, pwrkbh,